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qla2xxx: Fix hang due to cmd_kref not decrementing

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Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Quinn Tran 2014-09-25 06:14:57 -04:00 committed by Christoph Hellwig
parent da6b0ace34
commit d564a372b0
2 changed files with 7 additions and 12 deletions
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18
drivers/scsi/qla2xxx/qla_target.c
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@ -2409,6 +2409,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
cmd->cmd_sent_to_fw = 1;
qla2x00_start_iocbs(vha, vha->req); qla2x00_start_iocbs(vha, vha->req);
spin_unlock_irqrestore(&ha->hardware_lock, flags); spin_unlock_irqrestore(&ha->hardware_lock, flags);
@ -2484,6 +2485,7 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
qlt_load_data_segments(&prm, vha); qlt_load_data_segments(&prm, vha);
cmd->state = QLA_TGT_STATE_NEED_DATA; cmd->state = QLA_TGT_STATE_NEED_DATA;
cmd->cmd_sent_to_fw = 1;
qla2x00_start_iocbs(vha, vha->req); qla2x00_start_iocbs(vha, vha->req);
spin_unlock_irqrestore(&ha->hardware_lock, flags); spin_unlock_irqrestore(&ha->hardware_lock, flags);
@ -2717,19 +2719,10 @@ static void qlt_send_term_exchange(struct scsi_qla_host *vha,
if (rc == -ENOMEM) if (rc == -ENOMEM)
qlt_alloc_qfull_cmd(vha, atio, 0, 0); qlt_alloc_qfull_cmd(vha, atio, 0, 0);
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
done: done:
/* if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
* Terminate exchange will tell fw to release any active CTIO !cmd->cmd_sent_to_fw)) {
* that's in FW posession and cleanup the exchange.
*
* "cmd->state == QLA_TGT_STATE_ABORTED" means CTIO is still
* down at FW. Free the cmd later when CTIO comes back later
* w/aborted(0x2) status.
*
* "cmd->state != QLA_TGT_STATE_ABORTED" means CTIO is already
* back w/some err. Free the cmd now.
*/
if ((rc == 1) && (cmd->state != QLA_TGT_STATE_ABORTED)) {
if (!ha_locked && !in_interrupt()) if (!ha_locked && !in_interrupt())
msleep(250); /* just in case */ msleep(250); /* just in case */
@ -3071,6 +3064,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
se_cmd = &cmd->se_cmd; se_cmd = &cmd->se_cmd;
tfo = se_cmd->se_tfo; tfo = se_cmd->se_tfo;
cmd->cmd_sent_to_fw = 0;
if (cmd->sg_mapped) if (cmd->sg_mapped)
qlt_unmap_sg(vha, cmd); qlt_unmap_sg(vha, cmd);

1
drivers/scsi/qla2xxx/qla_target.h
View File

@ -917,6 +917,7 @@ struct qla_tgt_cmd {
unsigned int ctx_dsd_alloced:1; unsigned int ctx_dsd_alloced:1;
unsigned int q_full:1; unsigned int q_full:1;
unsigned int term_exchg:1; unsigned int term_exchg:1;
unsigned int cmd_sent_to_fw:1;
struct scatterlist *sg; /* cmd data buffer SG vector */ struct scatterlist *sg; /* cmd data buffer SG vector */
int sg_cnt; /* SG segments count */ int sg_cnt; /* SG segments count */